#Math{
    background: rgba(0, 0, 248, 0.38);
    width:400px;
    height:250px;
    padding-left:25px;
    padding-right:25px;
    margin:100px auto;

}
.f1{
    width:400px;
    height:60px;
    /*background: #02ffc5;*/
    border:1px solid red;
    overflow:auto;
}
.f2 {
    width: 200px;
    height:30px;
    /*background: #99ff52;*/
}
.f3{
    width:400px;
    height:60px;
    /*background: #ff5276;*/
    border:1px solid red;
    overflow:auto;
}
.f4{
    width:200px;
    height:30px;
    /*background: #3a67ff;*/


}


/*.f2-1{*/
    /*width:50px;*/
    /*height:100%;background:green;*/
/*}*/